Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Metal Films from a Single Source and Their Application in Nanoporous Filtration Synthesis, Electromagnetic Interference Shielding, and Electroadhesion.

ACS omega·2026
Same author

Polysulfone-Based Polymer Carbon Dot Membrane for Optical Dissolved Oxygen Sensing Application.

Chemistry, an Asian journal·2026
Same author

Arylthianthrenium Salts Enabled Palladium-Catalyzed Regioselective Arylation: Access to Value-Added 7-Azaindoles.

Organic letters·2025
Same author

Iodine-Catalyzed Regioselective C-3 Chalcogenation of 7-Azaindoles: Access to Benzothiophene-Fused 7-Azaindole Analogs.

The Journal of organic chemistry·2024
Same author

Thiol-Functionalized Adsorbents through Atomic Layer Deposition and Vapor-Phase Silanization for Heavy Metal Ion Removal.

ACS applied materials & interfaces·2024
Same author

Large-Area 2D Covalent Organic Framework Membranes with Tunable Single-Digit Nanopores for Predictable Mass Transport.

ACS nano·2022

Related Experiment Video

Updated: May 30, 2025

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

9.9K

Highly Permselective Contorted Polyamide Desalination Membranes with Enhanced Free Volume Fabricated by mLbL

Sayali Shaligram1, Rahul Shevate1, Siddhartha Paul1

  • 1Civil and Environmental Engineering Department, University of Houston, 4226 Martin Luther King Blvd, Houston, Texas 77204, United States.

ACS Applied Materials & Interfaces
|January 29, 2025
PubMed
Summary

New contorted polyamide membranes offer an 8-fold increase in water permeance for desalination. This breakthrough in polymeric membranes overcomes the permeability-selectivity trade-off, enhancing efficiency and reducing costs in water purification systems.

Keywords:
Tröger’s basedesalinationmolecular layer-by-layer assemblypermselectivitypolyamidepolymers of intrinsic microporositytriptycene

More Related Videos

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device
07:55

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Published on: July 20, 2021

10.4K
Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination
09:39

Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination

Published on: March 1, 2020

7.4K

Related Experiment Videos

Last Updated: May 30, 2025

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
07:45

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

9.9K
Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device
07:55

Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device

Published on: July 20, 2021

10.4K
Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination
09:39

Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination

Published on: March 1, 2020

7.4K

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Environmental Science

Background:

  • Polymeric membranes for desalination face a critical permeability-selectivity trade-off, limiting efficiency and increasing costs.
  • Conventional polyamide membranes, synthesized using m-phenylenediamine and trimesoyl chloride, exhibit inherent limitations in water flux and salt rejection.

Purpose of the Study:

  • To develop ultrathin contorted polyamide films with enhanced free volume for improved desalination performance.
  • To investigate the fabrication and properties of novel polyamide membranes using a solution-based molecular layer-by-layer (mLbL) deposition technique.

Main Methods:

  • Fabrication of ultrathin polyamide films using a sequential mLbL deposition of contorted diamine and trimesoyl chloride monomers.
  • Characterization of membrane properties, including water permeance, salt rejection, thickness, and surface roughness.
  • Analysis of transport mechanisms using solution-diffusion modeling.

Main Results:

  • Contorted polyamide membranes exhibited an 8-fold increase in water permeance compared to conventional membranes, while maintaining equivalent salt rejection.
  • The mLbL process enabled precise nanoscale control over film thickness and network structure, avoiding traditional interfacial polymerization limitations.
  • Permselectivity of the novel membranes surpassed commercial counterparts and approached theoretical upper bounds.

Conclusions:

  • Ultrathin contorted polyamide films fabricated via mLbL offer a promising solution to the permeability-selectivity trade-off in desalination.
  • Enhanced water transport pathways in contorted polyamides contribute to high water diffusivity and maintain excellent solute rejection.
  • These advanced membranes have the potential to significantly improve the efficiency and reduce the cost of reverse osmosis and nanofiltration systems.